How do you determine the strength needed for rope for adult tug a war?

Well, the simple answer is that for any set of reasonable circumstances, people's grip on the rope will begin to slip before it'll be anywhere near breaking. A 1/2" synthetic rope from a yacht store will take something in the vicinity of 6000 lbs before snapping. You'd need two really big teams, or a really crummy rope before that'll happen.

If you want to get scientific (and safe): assume that each member of the team can pull with a force corresponding to his/hers weight, then add the numbers up for one of the teams. Dabac 50 months ago.

Ditto turbo, and one that is large in diameter so they can get a good grip with less chance of rope burns Trekincat 56 months ago.

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